Aqara Contact Sensor + Outdoor Cover = Reliable Side Gate Monitoring

Automation Inspirations
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I wanted a way to reliably monitor my side gate so I could be notified whenever it was opened, closed, or left open for too long. Aqara’s Contact Sensor made it easy — all it needed was some weather protection for outdoor use.

I found this waterproof outdoor cover on Etsy: Waterproof Outdoor Sensor Cover and mounted my Aqara Contact Sensor inside. The cover keeps it safe from rain, sun, and debris, while still allowing it to detect open/close status without interference.

Here’s how I set it up:

  1. Mounting the Sensor: I placed the larger sensor body inside the cover, mounted to the gate post. The magnet half was aligned on the swinging gate itself.
  2. Positioning for Accuracy: I tested multiple alignments to ensure the contact registered consistently when the gate was latched.
  3. Automation & Notifications:
  • Immediate alerts: I receive instant notifications in the Aqara Home app when the gate opens or closes.
  • Left-open reminders: Using Aqara automations, if the gate remains open for more than a set time (I use 3 minutes), I get a “Gate has been left open” notification.

Results:

The sensor has been working flawlessly outdoors for months, thanks to the waterproof housing. I now have peace of mind knowing when the gate is accessed — and I’m reminded if someone forgets to close it.

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If anyone’s looking to use Aqara Contact Sensors outdoors, this little waterproof cover is a game changer.

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Can you link the cover? That could be a solve for something I’m intending on doing soon

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It is in the OpeningPost?

Btw, there is no real need to put the smaller part in the case as it is only a magnet.

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Any source for the cover? Also is this picture from 1998? Lol

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I tried using an IKEA contact sensor outside since it has an IP rating, but have constant connection issues. Might try to do something similar with an Aqara sensor and a case, would be helpful if you could link the one you used.

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This is a cool project… I’m totally going to do this!

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Thanks! Been wanting to integrate gates to my system.

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As much as I want to have a fully smart gate that I could control from either side, there aren’t many options out there for PVC fences. The one option I found was a Kickstarter and too expensive. I thought about piecing something together myself, but there were too many unknown variables. Instead, I went with an IglooHome padlock which lets me control access. The downside is that I have to keep the lock on one side of the gate for anyone that needs access from the outside, but then I can’t unlock and remove the lock to go from the inside to the outside.

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The link is in the original post and the picture was zoomed it so it looks kind of crappy, but I wanted to give a visual and it was all I had at the moment.

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The link is in the original post. Good luck.

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Great idea, thanks for sharing it here.

1 Like